🏷️ Basic Information

Make:

Harley-Davidson

Model:

FLHTCU TC Electra Glide Ultra Classic Low Twin Cooled

Year:

2015

Platform:

Project Rushmore

Type:

Motorcycle

Vin Prefix:

1HD1

👋 Introduction

Segment:

Full-Dress Touring Motorcycle

Target Audience:

Long-distance touring riders, riders prioritizing comfort, features, and storage.

Competitors:

Indian Roadmaster, Honda Gold Wing, BMW K1600GTL.

Touring Capability:

Large fairing with lower fairings, spacious saddlebags and Tour-Pak for extensive storage, comfortable seating for rider and passenger.

Engine Type:

Twin-Cooled High Output Twin Cam 103B engine offering increased torque and refined performance.

Suspension Features:

Low seat height for enhanced rider accessibility, adjustable rear suspension.

Technology:

Boom! Box infotainment system with navigation, Bluetooth, premium audio.

Refinement:

Cruise control, premium fit and finish, rider ergonomics.

📋 Manual Details

Scope:

Complete Service, Repair, and Workshop Manual

Total Pages:

Approximately 800-1000 (estimated for a comprehensive factory manual of this type)

Type:

Factory Service Manual / Workshop Manual

Language:

English

Format:

Downloadable Digital Format (PDF)

📖 Manual Coverage

Engine:

Twin-Cooled High Output Twin Cam 103B Engine (TC103B), Engine disassembly, assembly, tuning, diagnostics, cooling system.

Fuel System:

Electronic Sequential Port Fuel Injection (ESPFI), fuel pump, injectors, throttle body, fuel tank, fuel lines, diagnostics.

Ignition System:

Ignition module, spark plugs, coils, timing, diagnostics.

Transmission:

6-Speed Cruise Drive Transmission, clutch, gearbox, primary drive, final drive, lubrication, diagnostics.

Brakes:

Linked-Brake System (Reflex), Front and Rear disc brakes, ABS (Anti-lock Braking System), master cylinders, calipers, brake lines, fluid replacement, bleeding procedures.

Suspension:

Front fork (Telescopic), Rear shock absorbers (Emulsion), adjustments, rebuild procedures, fluid specifications.

Electrical System:

Battery, charging system (alternator, regulator), starting system (starter motor, solenoid), lighting (headlight, taillight, signals), fuses, relays, Battery Tender connection.

Electronics:

Boom! Box infotainment system, navigation, audio, Bluetooth, cruise control, security system, diagnostics.

Body Chassis:

Frame, fairings, saddlebags, tour-pak, seats, handlebars, controls, body panel removal and installation, component mounting.

Cooling System:

Twin-Cooled system, radiator, coolant, hoses, pump, diagnostics, fluid specifications.

Maintenance:

Scheduled maintenance, oil changes, filter replacements, spark plug replacement, chain adjustment (if applicable, though this model has belt drive), brake fluid service, tire pressure checks.

Troubleshooting:

Diagnostic flowcharts, common problem identification, electrical system troubleshooting, engine performance issues, fault code interpretation.

Repair:

Engine rebuilds, transmission overhaul, brake system repairs, suspension servicing, electrical component replacement, bodywork repair and refinishing.

Installation:

Accessory installation, component upgrades, removal and installation of major assemblies.

Wiring Diagrams:

Comprehensive, color-coded wiring diagrams for all electrical systems.

Depth:

Comprehensive, covering from basic user maintenance to complete engine and transmission overhauls, including advanced diagnostics and electrical system tracing.

📊 Manual Specifications

File Type:

PDF

Searchability:

Fully searchable text for quick information retrieval.

Quality:

High-resolution images and diagrams suitable for printing.

Binding:

N/A (Digital Download)

Paper:

N/A (Digital Download)

⚙️ Engine Specifications

Engine Type:

Twin-Cooled High Output Twin Cam 103B

Displacement:

1690 cc (103 cubic inches)

Bore X Stroke:

3.875 in. x 4.380 in. (98.4 mm x 111.3 mm)

Compression Ratio:

9.6:1

Valve Train:

Pushrod actuated overhead valves with hydraulic lifters; 2 valves per cylinder.

Cooling System:

Air-cooled and Liquid-cooled (Twin-Cooled)

Horsepower:

Approximately 87 hp @ 5250 rpm (Manufacturer's estimate, actual may vary)

Torque:

Approximately 105 ft-lbs @ 3500 rpm (Manufacturer's estimate, actual may vary)

Fuel Delivery:

Electronic Sequential Port Fuel Injection (ESPFI) with dual throttle body

Fuel Type:

Premium Unleaded Gasoline (91 octane or higher recommended)

Oil Capacity:

5.0 US qt (4.7 L)

Oil Type:

Harley-Davidson Genuine Formula+ (Primary/Transmission) and Syn3 Synthetic Motorcycle Oil (Engine) or equivalent.

🔧 Transmission

Type:

6-Speed Cruise Drive

Gear Ratios:

1st: 9.593, 2nd: 6.650, 3rd: 4.938, 4th: 3.812, 5th: 3.157, 6th: 2.790

Clutch Type:

Hydraulically Actuated Multiplate Wet Clutch

Primary Drive:

46/24 Tooth

Final Drive:

Belt Drive, 32/66 Tooth

Transmission Oil Capacity:

1.0 US qt (0.95 L) - Primary Compartment

Transmission Oil Type:

Harley-Davidson Genuine Formula+ or Syn3 Synthetic Motorcycle Oil

📐 Dimensions

Length:

103.7 in. (2634 mm)

Width:

39.5 in. (1003 mm)

Height:

54.5 in. (1384 mm)

Seat Height Laden:

25.7 in. (653 mm)

Ground Clearance:

5.1 in. (130 mm)

Saddlebag Capacity:

Approx. 2.26 cu ft (64 L)

Tour Pak Capacity:

Approx. 4.4 cu ft (124 L)

Dry Weight:

838 lbs (380 kg)

Running Order Weight:

935 lbs (424 kg)

Gross Vehicle Weight Rating:

1360 lbs (617 kg)

Payload Capacity:

Approx. 425 lbs (193 kg)

Front Tire:

BW 130/70R18 63H

Rear Tire:

BW 180/65B16 81H

Wheel Type:

Cast Aluminum

Wheel Bolt Pattern:

N/A (Magnesium alloy wheels with integrated hub assemblies)

🛡️ Safety Features

ABS:

Standard (Reflex Linked Brakes with ABS)

Cruise Control:

Standard Electronic Cruise Control

Lighting:

LED Daymaker headlamp and fog lamps, integrated front and rear turn signals, auxiliary passing lamps.

Braking:

Linked front and rear braking system for balanced deceleration.

Security:

Standard H-D Smart Security System with proximity-based key fob.

Fairing:

Batwing fairing for wind protection.

Frame Construction:

Stressed-member, 2-point, rigid frame-mount, die-cast aluminum.

💡 Technology Features

System Name:

Boom! Box 6.5GT Infotainment System

Display:

6.5-inch Color Touchscreen with Jukebox functionality.

Audio:

Premium Boom! Box audio system with dual speakers in the fairing, and optional rear speakers.

Connectivity:

Bluetooth for phone and music streaming, USB connection for media devices, CB/Intercom capability.

Navigation:

Integrated GPS Navigation system with map updates.

Cruise Control:

Electronic cruise control for effortless highway riding.

Braking:

Reflex Linked-Brake System with ABS.

Smart Security System:

Proximity-based key fob system for security.

Diagnostics:

On-board diagnostics (OBD) for service technicians, allowing access to engine and system data via the diagnostic port.

🔧 Maintenance

Initial Service:

1,000 miles (1,600 km) or 6 months, whichever comes first.

Subsequent Service:

Every 5,000 miles (8,000 km) or 12 months, whichever comes first.

Engine Oil Change:

Every 5,000 miles (8,000 km) or annually.

Transmission Fluid Change:

Every 10,000 miles (16,000 km) or 24 months.

Primary Chain Tensioner:

Inspect at 10,000 miles (16,000 km), replace if necessary (hydraulic tensioner typically lasts much longer).

Engine Oil:

Harley-Davidson Syn3 Synthetic Motorcycle Oil SAE 20W-50 (or Harley-Davidson Genuine V-Twin 20W-50) - 5.0 US qt (4.7 L) capacity.

Primary Fluid:

Harley-Davidson Formula+ or Syn3 Synthetic Motorcycle Oil - 1.0 US qt (0.95 L) capacity.

Brake Fluid:

DOT 4 Synthetic Brake Fluid (Harley-Davidson Extreme Pressure Grease recommended for caliper pins).

Coolant:

Harley-Davidson Performance Coolant or equivalent (Ethylene Glycol based, 50/50 mix with distilled water).

Twin Cam Tensioners:

Early Twin Cam models were known for cam chain tensioner wear. The 2015 models utilize an upgraded hydraulic tensioner that is generally more durable, but inspection is still recommended by the manual.

Paint Chipping:

Some owners reported minor paint chipping on fairing edges or saddlebags due to vibration; this manual would detail repair and refinishing procedures.

Infotainment Glitches:

Early versions of infotainment systems can sometimes experience minor software glitches, addressed by software updates and diagnostic procedures in the manual.

Charging System Issues:

While generally reliable, charging system components (stator, regulator) can fail over time, with the manual providing diagnostic steps.

📚 Vehicle History

Heritage:

Harley-Davidson, founded in 1903, is an iconic American motorcycle manufacturer renowned for its cruiser and touring motorcycles.

Electra Glide Lineage:

The Electra Glide series dates back to 1965, evolving into the ultimate touring platform with continuous technological and comfort advancements.

Project Rushmore:

The 2014 model year saw the introduction of 'Project Rushmore', a significant platform overhaul focusing on rider-centric improvements, aerodynamics, storage, and infotainment.

Twin Cooled Introduction:

The Twin-Cooled Twin Cam 103 engine, featuring liquid cooling for the cylinder heads, was introduced in Project Rushmore models to improve heat management and performance.

Production Location:

United States (York, Pennsylvania; Menomonee Falls, Wisconsin; Kansas City, Missouri assembly plants).

🏆 Awards & Recognition

Industry Acclaim:

While specific awards for the 2015 FLHTCU TC are not typically listed individually, the Electra Glide line consistently receives high marks for touring comfort and capability from motorcycle publications and rider surveys.

Rider Satisfaction:

Generally high rider satisfaction due to comfort, features, and iconic Harley-Davidson ownership experience.